module.exports = {
    checkLogin: function(req, res, next) {
        if(!req.session.user) {
            req.flash('error','未登录');
            return res.redirect('/signin');
        }
        next();
    },
    checkNotLogin: function(req, res, next) {
        if(req.session.user) {
            req.flash('error', '已登录');
            return res.redirect('back');//返回上一页
        }
        next();
    }
}